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On the Stand Composition and the Standing Volume Table of the Artificial Pencil Ceder Forest.

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Abstract 本地方において,きわめて貴重な樹種である猪野国有林のエンピツビャクシン林の調査を行つたが,その結果を要約すれば次の通りである.1)林分は,第1図および第2図の林相曲線に示すごとく,おおむね一斉単純林である.2)樹高成長は,30~35年頃まで旺盛である.3)胸高直径は10~20年頃,急激に成長が衰える.ゆえに,この時期に間伐を行うことが必要と認められる.4)材積成長は,相当高齢まで旺盛な成長をしてい...る.5)第2表に示す立木幹材積表を調製した.6)樹形は,スギ,ヒノキより梢殺である.
Investigations were carried out into the pencil ceder forest in the Ino National Fotest, The results are summarized as follows: 1. As shown in Figs. 1 and 2, the stand is in general a normal pure stand. 2. The growing conditions are as shown in Table 1 and Fig. 3 a-c. 3. The Standing Volnme Table for pencil ceders is as shwn in Teble 2. 4. The pencil ceder is of a more tapering tree form than Japanese ceders and Japanese cypresses in Kyushu District.
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Table of Contents I 緒言 II 概況 III 林分構成 IV 成長状態 V 材積表の調製 VI 要約 Resume

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Created Date 2009.12.09
Modified Date 2019.09.03

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